Mercurial > mxd2map

annotate src/java/de/intevation/mxd/reader/UniqueValueRendererReader.java @ 117:6c3d880db7c5

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Improved exception handling for layer reader.
author Raimund Renkert <rrenkert@intevation.de>
date Thu, 16 Jun 2011 12:05:34 +0200
parents c8a1361ddd38
children acc9e5430177
rev   line source
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diff changeset
1 package de.intevation.mxd.reader;
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2
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3 import org.apache.log4j.Logger;
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4
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5 import com.esri.arcgis.carto.IFeatureRenderer;
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6 import com.esri.arcgis.display.ISymbol;
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7 import com.esri.arcgis.carto.UniqueValueRenderer;
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8
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9 import org.w3c.dom.Element;
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10 import java.io.IOException;
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11
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12 import de.intevation.mxd.utils.MapToXMLUtils;
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13
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14 /**
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15 * Reads unique vaule renderer information.
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16 *
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17 * @author <a href="mailto:raimund.renkert@intevation.de">Raimund Renkert</a>
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18 */
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19 public class UniqueValueRendererReader
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20 implements IRendererReader {
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21
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22 /**
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23 * The logger.
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24 */
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25 private static final Logger logger =
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26 Logger.getLogger(FeatureLayerReader.class);
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27
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28 /**
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29 * Private Member.
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30 */
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31 private UniqueValueRenderer renderer;
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32 private Element layer;
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33 private MapToXMLUtils util;
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35
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36 public UniqueValueRendererReader(IFeatureRenderer renderer)
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37 throws Exception {
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38 logger.debug("constructor()");
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39 if (renderer instanceof UniqueValueRenderer) {
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40 this.renderer = (UniqueValueRenderer)renderer;
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41 }
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42 else {
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43 throw new Exception ("Not an instance of UniqueValueRenderer.");
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44 }
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45 }
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46
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47 /**
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48 * Setter for the parent XML element.
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49 *
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50 * @param parent The XML parent node.
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51 */
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52 public void setParent(Element parent) {
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53 this.layer = parent;
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54 }
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55
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56 /**
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57 * Setter for XML document helper.
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58 *
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59 * @param util The helper class for storing map information.
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60 */
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61 public void setUtil(MapToXMLUtils util) {
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62 this.util = util;
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63 }
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64
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65 /**
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66 * Reads the renderer attributes.
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67 *
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68 * @return The parent XML node.
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69 */
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70 public Element read() {
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71 logger.debug("read()");
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72 int count = 0;
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73 try {
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74 count = renderer.getClassCount();
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75 }
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76 catch(IOException ioe) {
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77 logger.error(
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78 "Could not read class count."+
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79 " Stopped reading renderer.");
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80 return layer;
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81 }
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82 for(int i = 0; i < count - 1; i++) {
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83 Element rendererElement = util.addRenderer(layer);
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acbe36fb45e0 Use the wrapper in the renderer reader to read symbols.
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84
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85 try {
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86 String value = renderer.getValue(i);
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87 rendererElement.setAttribute("name", renderer.esri_getClass(i));
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88 rendererElement.setAttribute("description",
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89 renderer.getDescription(value));
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90 rendererElement.setAttribute("value", value);
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91 rendererElement.setAttribute("label", renderer.getLabel(value));
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92 rendererElement.setAttribute(
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93 "field_count",
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94 String.valueOf(renderer.getFieldCount()));
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95 for(int j = 0; j < renderer.getFieldCount(); j++) {
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96 rendererElement.setAttribute(
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97 "expression_field_" + j,
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98 renderer.getField(j));
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99 }
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100 rendererElement.setAttribute("expression_operator", "=");
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101
116
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102 ISymbol sym = renderer.getSymbol(value);
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103 MarkerSymbolReader markerReader = new MarkerSymbolReader();
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104 LineSymbolReader lineReader = new LineSymbolReader();
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105 FillSymbolReader fillReader = new FillSymbolReader();
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106 if(markerReader.canRead(sym)) {
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107 markerReader.setSymbol(sym);
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108 markerReader.setUtil(util);
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109 markerReader.setParent(rendererElement);
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110 markerReader.read();
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111 }
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112 else if(lineReader.canRead(sym)) {
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113 lineReader.setSymbol(sym);
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114 lineReader.setUtil(util);
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115 lineReader.setParent(rendererElement);
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116 lineReader.read();
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117 }
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118 else if(fillReader.canRead(sym)) {
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119 fillReader.setSymbol(sym);
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120 fillReader.setUtil(util);
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121 fillReader.setParent(rendererElement);
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122 fillReader.read();
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123 }
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124 else {
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125 logger.debug("Not a known symbol type: " +
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126 sym.getClass().toString());
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127 }
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128 }
116
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129 catch(Exception e) {
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130 logger.error(
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131 "Could not read unique value data." +
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132 e.toString());
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133 return layer;
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134 }
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135 }
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136 return layer;
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137 }
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138 }
cbd67b1100d8 Initial commit of the first prototype.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
139 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
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